|Indecisive El Nino - NASA/Goddard Space Flight Center Conceptual Image Lab|
This animation shows El Nino's and La Nina's mulitiple personalites. The sequence begins with normal jet streams, normal sea surface temperatures, and normal wind patterns. The first change illustrates what occurs when a very strong El Nino strikes surface waters in the Central equatorial Pacific Ocean. Warm water anomalies (red) develop in the Central Pacific Ocean while normal westerly winds weaken and allow easterly winds to push the warm water up against the South American Coast...
Keywords: Earth Science, El Nino, Gonnelli; What -- Earth; Where -- Pacific Ocean
|NASA Explains 'Dust Bowl' Drought - NASA/Goddard Space Flight Center Conceptual Image Lab, Scientific Visualization Studio|
Abnormal sea surface temperatures (SST) in the Pacific and the Atlantic Ocean played a strong role in the 1930s dust bowl drought. Scientists used SST data acquired from old ship records to create starting conditions for the computer models. They let the model run on its own, driven only by the observed monthly global sea surface temperatures. The model was able to reconstruct the Dust Bowl drought quite closely, providing strong evidence that the Great Plains dry spell originated with abnormal ...
Keywords: Byrne, Drought, Earth Science, Gonnelli, Sea Surface Temperature; What -- SST; What -- Earth; Where -- Pacific Ocean; Where -- Atlantic Ocean
|NASA Explains 'Dust Bowl' Drought - NASA/Goddard Space Flight Center Conceptual Image Lab|
This illustration shows how cooler than normal tropical Pacific Ocean temperatures (blues) and warmer than normal tropical Atlantic Ocean temperatures (red and orange) contributed to a weakened low level jet stream and changed its course. The jet stream normally flows westward over the Gulf of Mexico and then turns northward pulling up moisture and dumping rain onto the Great Plains. During the 1930s, this low level jet stream weakened, carrying less moisture, and shifted further south...
Keywords: Byrne, Drought, Earth Science, Gonnelli, Precipitation, Sea Surface Temperature; What -- Earth; Where -- Pacific Ocean; Where -- Atlantic Ocean; Where -- Gulf of Mexico